1. Quaternary geologic map of the Lake Nipigon 4° x 6° quadrangle, United States and Canada [cartographic material] Yale Public content 1994. 2002-06-01T04:00:00Z. 2016-07-26T21:18:50Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. cartographic image. Public. Ontario, Michigan, and Nipigon, Lake, Region (Ont.). Quaternary.